John s



JHN ARMSTRONG, 0F DELAWARE,'OHIO.

Letters Patent No. 83,901, dated November 10, 1868.

MPRG'VELENT IN DRIVE-WELLS.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom 'it may concern.:

Be it known that l, Jenn S. Anns'rnone, of Belaware, in the county of Delaware, and State of Ohio, have invented new and useful Improvements in DrivelVells; and l do hereby declare that the following is a full, clear, and exact description thereof, which will enable those skilled in the art to make and use the saine, reference being had to the accompanying drawings, forming part of this speciiication, in which the drawing represents a side view of my invention, with a part of the revolving point broken away, to exhibit the perfbrations in the wellutube.

rlhe object of this invention to furnish an improved drive-well.

It consists of a conical e point, C, having helical feathers or threads, b, which are cast on the peint when the latter is made.

The point G is ahollow a portion of its length, and the bore or cavity fits with easy contact on the end of the lower `joint, A, of the ordinary drive-well tube, which is ofthe size of common gas-pipe.

The lower end of the tube is formed with numerous perfor-ations, a a c, Sto., which are closed against the entrance of sand while the point is being forced downv into the ground.

When, however, it is desired to ascertain if there be water present at any point of the descent, the tube A is raised a few inches, to raise several of the holes frornout the barrel of the point, and water, entering and rising to the surface of the ground, will announce its presence.

rj hus the well may be tried for water at different points of the descent, and when found, the' tube is raised, to withdraw all the peribrations from the point, leaving, however, the extreme end of the joint A within the bore of the point. n

Another advantageous feature of my invention obtains in the rotation of the point, caused by the helical feathers b b, and permitted by the cylindrical form of the tube A, and the cavity or bore of the point Within which it fits, so as to permit the point to turn freely, though without lateral deviation.

As the point is forced down, it revolves freely, thus piercing through the various formations of soil, with out being so easily deviated from the proper perpendicular course. The rotation of the point also enables it to be forced through the soil with the application of less power.

The point being of greater diameter than the tube.

A and the successive j ints, (screwed on to each other in the usual way as they enter the ground,) the welltube will not be so firmly held 'bythe suction of the earth but that it may be easily withdrawn to try for water, as before described, or entirely withdrawn when no water is found after the point has been driven to a reasonable depth.

The upper end or" the joint A is formed with a screwthread, B, and both ends of each successive joint are formed with the usual rnale and female wrews, to conn neet them with each other.

Any suitable fltering-device may be placed within the lower end of the tube A, for the'purpose of excluding sediment.

I am aware that drive-well points, having helical or screw-threads or feathers similar to those above shown, have been used, but such screw-points are firmlyaffixed to the well-tube, and are employed for the purpose of actuating or driving the well-tube down after the latter being rotated for that purpose.

In my invention, the Well-tube is forced down without tiuning, and one or morelhelioal threads, of coarse pitch, are employed to rotate the point upon the tube, that the former may descend Without deviation, and withless application of power, at the same time permitting the well-tube to oe raised from time to time for the purpose of trying for water.

The point C is of cast-iron, and its point is chilled in casting, to render it hard and penetrating.

l do not claim broadly the use of a screw or helical drive-well point; but

/Vhat I claim as new, and desire to secure by Letters Fatent, is-

The point C, having helical threads or feathers, b, and fitted to rotate independently on the perforated end of the tube A, substantially as described, and for the purpose set forth.

The above specification of niy invention signed by me, this 20th day of April, 1868.

JOHN S. ARMSTRONG. Witnesses:

WM. F. MQNAMARA, ALEX. F. Bonnets. 

